Investors from Asia and Europe were on the oversubscribed deal, which was managed by Commonwealth Bank of Australia, Deutsche Bank, NAB, UBS and Westpac. Proceeds will be used for projects such as hydrogen hubs.
Siason, who has spent over 15 years with Citi, will relocate to Manila to become chief country officer to replace Michael Chua, who is retiring, on April 1.
The German bank is targeting clients, including fund managers, who want Shariah custody as regional demand grows and cross-border Asean capital flows increase.
Periodic reviews, transparent integrity audits and desire for continual improvements during the journey might be essential to keep investors on the ESG trail.